Place pasta, pumpkin and water in a large bowl and cook on HIGH (850W) for 12-15 minutes or until pasta is al dente and pumpkin tender.,Drain and set aside.,______,Stir in chicken, spring onions, spinach, salt and pepper, return to the microwave and cook HIGH (850W) for 2-3 minutes.,Stir cheese mixture and pumpkin into cooked pasta and mix until well combined.,Serve into bowls and top with cashew nuts.